Population dynamics of three leafhopper vectors of rice tungro. Rice diseases and pests, description, uses, propagation. Nephotettix virescens was dominant in summer rice seed bed in both the year and transplanted monsoon rice field in the year 2005. Leafhoppers as vectors of plant mycoplasma diseases. Seasonal abundance and species composition of nephotettix. Proteome analysis of watery saliva secreted by green rice. Biochemical analysis of 4 rice varieties and a weed showed that the total free amino acid content was greater in the susceptible variety tn 1 than in ptb2, ptb7 and ptb 18 which are resistant to both the species of green leafhoppers, however, the weed leersia hexantira the most suitable host of nephotettix niqropictus, had the lowest. Other readers will always be interested in your opinion of the books youve read.
Cicadellidae di wilayah endemi dan non endemi penyakit tungro padi the objectives of this research were to determine the species composition, distribution pattern and virus transmission properties of n. Nephotettix cincticeps, a prevalent rice pest, injects gelling and. Ento 331 crop pests and stored grain pests and their management lecture no. The green rice leafhopper, nephotettix cincticeps, is a vascular bundle feeder. In addition to rice yellow dwarf ryd phytoplasma, several phytoplasmas infect gramineous plants, including rice orange leaf, bermuda grass white leaf, brachiaria grass white leaf and sugarcane white leaf phytoplasmas. Furthermore, gelfree proteome analysis that was performed to cover the. Bulletin of the kyushu agricultural experiment station, 24. Nephotettix nigropictus was present at all altitudinal levels on each sampling date.
Rtsv on its own is transmitted by the rice green leafhopper nephotettix virescens but causes slight or. Files are available under licenses specified on their description page. Nephotettix virescens an overview sciencedirect topics. Species are mostly found in asia, although two are from africa. Transgenic rice plants expressing snowdrop lectin galanthus nivalis agglutinin. Revision of the genus nephotettix matsumura homoptera. Nephotettix nigropictus viruliferous for rice gall dwarf virus insect colonies viruliferous acquisition virus free sex female male nymph female male female male no. It is also known to be associated with free radical scavenging activities and. An nephotettix nigropictus in uska species han insecta. Phyto72n09 1246 american phytopathological society. Karakter populasi wereng hijau, nephotettix virescens hemiptera. This invention provides a compositions and methods of using biologically effective amount of a compound of formula 1, an noxide or an agriculturally suitable salt thereof wherein r1, r2, r3, r4a, r4b and r5 are as defined in the disclosure, to protect genetically modified plants and their environment.
These pages form part of a scientific key which will assist a trained entomologist to identify the species accurately. Intensive host range studies comprising of 55 common weeds and eight cultivated plant species indicated thatnephotettix virescens could survive and breed. Rice tungro spherical virus rtsv was suggested that this phenomenon might rrsv 8. Pdf mass rearing technique for the rice green leafhopper. Tungroinfected plants had a significantly higher free sugar content but soluble protein was significantly lower than in healthy plants. A reovirus in the brown planthopper, nilaparvata lugens. World distribution of nephotettix nigropictus nephni eppo global database. They are free living, parasitic and saprophytic and reproduce by budding and binary fission. After manual adjustments, conserved regions of glycoside hydrolase. Biochemical analysis of 4 rice varieties and a weed showed that the total free amino acid content was greater in the susceptible variety tn 1 than in ptb 2, ptb 7 and ptb 18 which are resistant to both the species of green leafhoppers.
An nephotettix nigropictus in nahilalakip ha genus nga nephotettix, ngan familia nga cicadellidae. Coherent diffraction of single rice dwarf virus particles using hard xrays at the linac coherent light source. Transmission of rice gall dwarf virus by the green rice leafhopper. Alternative names included nephotettix bipunctatus and a form of n. The ultrashort and extremely bright pulses from xray free electron lasers. The farmcop suction sampler was employed for population censuses ofn. An immulon ii plate believed to be the causal virus of tungro have key importance for understanding dynatech was coated with igg at 1,4, 1, and was once called rice tungro virus tungro epidemiology. Nephotettix virescens distant is the most efficient vector of tungro virus with transmission ability of 80% approximately17. Bulletin of kyushu agricultural experimental station, 16. Four gravid females of either bph or glh were released into each cage for 48 h to lay eggs. The planthopper transmits two kinds of viruses, rice ragged. Intensive host range studies comprising of 55 common weeds and eight cultivated plant species indicated thatnephotettix virescens could survive and breed o. An ebook reader can be a software application for use on a computer such as microsofts free reader application, or a booksized computer that is used solely as a reading device such as nuvomedias rocket ebook. Several new methods of propagating rice have been developed which allow rice to be cultivated in less conventional areas e.
Cicadelloidea euscelidae based on the type material volume 60 issue 3 m. Resistance to green leafhopper nephotettix virescens and. This is to ensure that we give you the best experience possible. Population dynamics of the green leafhopper, nephotettix. Population dynamics of three leafhopper vectors of rice tungro viruses, nephotettix virescens distant, n. Biosystematic study on the genus nephotettix occurring in asia. Insects free fulltext preliminary investigation of. Comparative levels of resistance of rice cultivars and weeds against nephotettix nigropictus stal and nephotettix virescens distant. Roles of insects for human free download as powerpoint presentation. Survival was reduced by 29% and 53% p free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary.
Study on the nephotettix material deposited in the hungarian natural history museum hemiptera, auchenorrhyncha. Us 20140030243 a1 anthranilamides compositions the. The diseasesfree colonies were raised on healthy rice seedlings in insect proof cages. Candidatus phytoplasma oryzae, a novel phytoplasma taxon. Both nymphs and adults suck the plant sap from the leaf and leaf sheath. This situation exists between two viruses where both are normally associated with a recognized disease in the field. Green leafhoppers, the genus nephotettix matsumura cicadellidae. Nephotettix cincticeps an overview sciencedirect topics. Biochemical aspect of varietal resistance to rice green.
Mass rearing technique for the rice green leafhopper nephotettix nigropictus stal. Rice is considered to be a semiaquatic annual grass and is commonly grown in paddies in wetlands or under shallow water. Study on the nephotettix material deposited in the. Both hopper populations originated from wild individuals caught in the rice fields of the laguna province. Coherent diffraction of single rice dwarf virus particles. Resistance to nephotettix impicticeps and nilaparvata lugens in varieties of rice. The green rice leafhopper, nephotettix cincticeps hemiptera.
Pdf the abundance, incidence pattern and species composition of green. Many large polyhedral particles about 65 nm in diameter were. The population dynamics ofnephotettix virescens, a vector of rice tungro virus disease was investigated in a synchronized transplanting area at jatisari 19841986, west java and in a staggered transplanting area at sidan 19861988, bali, indonesia. Occurrence and spread of rice tungro spherical virus in. They are filterable through bacterial filters and require sterol for their growth. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Nymphs of nephotettix nigropictus were fed on diseased rice plants. Gna were screened for resistance to green leafhopper nephotettix virescens. An effective amount of at least one additional biological agent can be combined with the. The green rice leafhopper grlh, nephotettix nigropictus, is a serious rice. General information about nephotettix nigropictus nephni this website uses cookies our website uses cookies to ensure that we give you the best possible online experience.
Studies on probing stimulants for the green rice leafhopper. Behavior and biology of nephotettix virescens homoptera. Many of the insects depicted on these pages are outwardly similar and you should not use photographs as the sole means of identification. Nephotettix nigropictus nephniworld distribution eppo. Population dynamics, forecasting and control of the green rice leafhopper, nephotettix cincticeps uhler. Genetic analysis of rice green leafhopper nephotettix nigropictus stal from samosir island indonesia using partial dna sequence of cytochrome oxidase sub unit i coi gene. At low altitude nephotettix virescens was collected from both low and mid altitudinal levels on all sampling dates with. Karakter populasi wereng hijau, nephotettix virescens.
We do not use these to store personal information about you. Rtd is caused by rice tungro bacilliform virus rtbv and rice tungro spherical virus rtsv. Resistance to nephotettix impicticeps and nilaparvata. The green rice leafhopper grlh, nephotettix nigropictus, is a serious rice sucking pest and is widely distributed in south and southeast asia, japan, and taiwan. Cookies on plantwise knowledge bank like most websites we use cookies. The brown planthopper, nilaparvata lugens, is the most serious pest of the rice plant in east and southeast asia, because of the severe damage it causes by sucking sap and transmission of viruses to the rice plant. However, the weed leersia hexandra the most suitable host ofnephotettix nigropictus, had the lowest amount of free amino acids. On the occurrence, morphology and biology of nephotettix. Download fulltext pdf mass rearing technique for the rice green leafhopper nephotettix nigropictus stal.
Pdf abundance and species composition of rice green leafhopper. Orosz department of zoology, hungarian natural history museum, h1088, budapest, baross u. To investigate whether the ryd phytoplasma is a discrete, specieslevel taxon, several isolates of the aforementioned phytoplasmas were analysed using pcramplified 16s rdna. It not only causes direct damage to the crop but also can transmit the rice dwarf virus rdv, rice tungro virus, and rice transitory yellowing virus. We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Host specificity of rice green leafhoppers, nephotettix virescens. All structured data from the file and property namespaces is available under the creative commons cc0 license. Known as green leafhoppers of paddyrice, nephotettix cincticeps and n. Studies on the life history and the population dynamics of the green rice leafhopper, nephotettix cincticeps uhler. Continuing to use this website means you agree to our use of cookies. Nephotettix is a genus of planthoppers in the subfamily deltocephalinae and tribe chiasmini.
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